Spherical pipe-joint



2 Sheets-Sheet 1.

(No Model.)

H. W. BRINOKERHOPP. SPHERIUAL PIPE JOINT.

Patented Apr. 24, 1888.

I Wiifnesses UNITED STATES PATENT. OF ICE.

HENRY W. BRINCKERHOFF, OF BROOKLYN, NEW YORK, ASSIGNOR TO JOHN F. WVARD, OF JERSEY CITY, NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 381,826, dated April 24, 1888.

Application filed December 4,1885. Serial No. 184,715. (No model.) i

To aZZ whom it may concern: 7

Be it known that I, HENRY WV. BRINOKER- HOFF, a citizen of the United States, and a resident of Brooklyn, New York, have invented certain Improvements in Spherical Pipe-Joints, ofwhich the following is aspecification.

My invention relates to improvements in spherical pipe-joints ofthe class shown in Letters Patent ofJ. F. Ward, dated August 25,1863,

and those granted to R. B. Ooar, dated March 15, 1870, and May 81, 1870; and the objects of my invention are to strengthen the packing, to relieve it from undue strain, to effectually retain it in its place, and to facilitate its introduction into the packing space. These objects I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in Which Figures 1, 2, and 3 represent sections of different forms of pipejoint illustrating the features of my invention.

In Fig. 1,which is an improvementon the Ward pipe-joint, above referred to, A represents the bell end of one length of pipe, and B the spigot end of an adjoining length. The interior of the bell A has a bearing-surface consisting of a zone, 50, forming a seat for the main body of packing of the spigot, and inward beyond this another zone, y, of larger radius, forming a seat for the packing t at the inner end of the spigot, the zones having a common center,w,which is situated within the bell ata distance from the plane vof the mouth. On the spigot B is formed a stop, I), the face of which is determined by a radial line, d,

drawn from the center to of the joint. The spigot B is so formed that there shall be a space, 6, between it and the interior of the bell for the reception of the lead or other soft metal packing, q, and into this space are introduced loose rings f, by preference of wrought-iron, these rings becoming embedded in the lead as the latter is poured into the space e, thereby rendering the lead more rigid and more capable of resisting distortion. To a groove in the spigot is also adapted a ring, 71, of wrought-iron,which should be severed at one point, so that it can be expanded and passed over the spigot and permitted to recoil and enter the groove. This ring (or there may be more than one) serves as a retainer for the lead packing, and in fact renders the same such a permanent part of the spigot that it cannot be wrenched therefrom by the movement of the joint. It will be noticed that there is an internal shoulder. '5, within the bell and an external shoulder, i, on the spigot, these shoulders bearing such relation to each other and to the stop b that when the stop on 63 one side of the spigot is in contact with the mouth of the bell the shoulder t" on the other side of the spigot is in contact with the shoulder 1' in the bell; hence the entire strain is resisted by these shoulders and the stop and is 65 thus removed from the packing. There is a space for packing, t, at the end of the spigot between the latter and theinterior of the bell, so that in pipes large enough in diameter to admit an operator the latter can pack and calk nal rib, 2, between which and the jointingring W the packing of molten lead is run,this ring being made in sections bolted together, so as to embrace the mouth of the bell, the spigot, and the stop-shoulder of the latter,and

thus serves the purpose of confining the lengths of the pipe in their proper relative positions prior to and during the pouring in of the metal through a runner, 3. (Shown by dotted lines.) The ring has to be removed after the introduction of the packing. This modification contains several features, described in reference to the joint shownin Fig. 1-name1y, the external and internal stops, the loose rings f, the internal packing-space,

and the retaining-ring h,which in this case is 5 attached to the bell instead of to the spigot.

In the joint shown in Fig. 3 an external retaining-ring, h, is used in place of an internal ring, it, projecting into the packing, part of the ring h coming into contact with the stop mo 1), to limit the movement of the pipes,and said ring having a projection adapted to a recess in the stop. The internal shoulder, 21, has a similar projection adapted to a recess in the A represents the 7 5 spigot-shoulder, the hold being thus made more secure. In this instance the packing, instead of being poured into the space between the bell and spigot, is introduced into the same either before or during the putting together of the pipes, the packing (1 consisting of papierunaeh, tarred rope, or other fibrous material, or wood, or even soft metal, and being molded in the form of split rings or-segments which admit of ready adjustment to their proper positions.

It will be observed that there are in the joints shown in Figs. 1 and 2grooves m and n, formed either in the outer surface of the spigot or in the inner surface of the bell, the grooves on being in the rear of the packing-space e and in advance of the shoulder Land the groove n being in advance of the space for the rear packing, t, and in the rear of the shoulder i. These grooves, which are empty in the first place, serve to receive and retain any of the soft metal which may find its way beyond the packing-spaces and thus prevent its entrance to the clearance'space between the shoulders i i,where it would interfere with the play of thejoint.

I claim as my invention- 1. The combination of the bell and spigot and the interposed packing, with internal stopshoulders formed upon the bell and spigot and serving to limit the movement of the bell and prevent straining of the packing, all substantially as specified.

2. The combination, in a spherical pipejoint, of the bell, spigot, and interposed packing, said bell having an internal shoulder and the spigot having an external stop to seat against-the mouth of the bell, and a second stop to simultaneously seat against the internal shoulder in the bell, all substantially as specified.

3. The combination of the bell and spigot, and intervening packing of a spherical pipejoi at, with the ringsf, embedded in and forming part of the packing, as set forth.

4. The combination of the bell, spigot, and packing of a spherical pipe-joint,with the retaining-ring h, adapted to a groove in the spigot or bell and projecting into the packing so as to retain the same, as specified.

5. The combination of the bell and spigot constructed to form a packing-space, e, between them, shoulders in the rear of said packing-space to limit the movement of the spigot, and a groove between the packing-space and the forward shoulder, all substantially as and for the purpose specified.

6. The combination of the bell and spigot, constructed to form internal stop shoulders, a packingspace around the inner end of the spigot, and a groove to prevent the passage of packing from said space to the clearancespace between the stop-shoulders, all substantially as specified.

7. The combination of the bell, the spigot having an external stop-shoulder, and the jointing-ring WV, fitted to the bell and to the spigot and its stop-shoulder, all substantially as specified.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

HENRY W. BRINGKERHOFF.

Witnesses:

CHRISTOPHER C. WHITTEMORE, WILLIAM G. WEsrERVELT. 

